A method of prohibiting personal information identification of a photographic subject including: digitally photographing the photographic subject to form a photo of the photographic subject, the photographic subject having an indicia incorporated in the photo indicating prohibiting personal information identification of the photographic subject, the indicia being invisible to the human eye; reading the indicia; responsive to reading the indicia, processing the indicia to make a determination when the indicia prohibits identification of personal information of the photographic subject; and disclosing on a social network system the photo and the personal information of the photographic subject according to the determination.